Oblivious grandfathers!
Oblivious consultant!
It did so produce results!
He's very impressed by what she knows concerning the family company, that she is that concerned for those who work there to know so much about all of them, including recognizing them on first sight.
And interacting with them so well, handling the situation with no negative impact upon their self-esteem.
This is not a normal thing, at all!
This side of her, he had no knowledge of, and would not have become aware of otherwise.
Success! His opinion of her has increased remarkably!
But no, they don't realize this at all, they think it a failure, what they had attempted.